Tyre pressure / inflation maintenance guides & TPMS specs

• Source / publisher: Michelin Truck Tire Service Manual (inflation chapters incl. ATIS/TPMS); EU General Safety Reg (EU) 2019/2144 → UN R141 TPMS for trucks; Bridgestone L&I tables (load & inflation tables)
• Type: manual | regulation explainer
• Topics: cold-inflation checking, load-vs-pressure relationship, underinflation failure mode (flex heating → casing breakdown), ATIS (automatic inflation) systems, TPMS duty classes under UN R141, dual-matching pressure rules, gauge accuracy
• Vehicle scope: truck | trailer | bus
• Region: global + EU regulatory layer (TPMS mandatory on new EU HGVs)
• Language: en
• Link: Michelin Truck Tire Service Manual 2023: michelinb2b.com ; UN R141 TPMS regulation: unece.org ; load/inflation tables: load & inflation tables
• License/access: public
• Notes: teach underinflation as THE leading preventable failure mode; R141 makes TPMS the EU regulatory anchor — flag SA fleets mostly run aftermarket TPMS (TPMS & tyre telematics covers the telematics layer). Convert psi↔kPa↔bar with a unit-conversion table.